The KRSU822 is a three phase drainage pump with a large solids passage capacity, designed specifically for temporary over-pumping during sewer refurbishment. Constructed in superior grade materials throughout to give exceptional performance in harsh operating conditions, its narrow shape and top discharge enables it to be fitted within a manhole. The hydraulic design features a double mechanical seal, with an oil lifter, for positive seal lubrication in any operating position. It has a generous solids capacity. The high-performance motor features internal overload protection and is cooled by a water jacket that assures efficient motor cooling even when exposed to air.